any help me with this error ,((Attempted to access HydrogenProduced(1); index out of bounds because numel(Hydr​ogenProduc​ed)=0. Error in main (line 17) CurrentHydrogenInTank(1) = IniHydrogen + HydrogenProduced(1) - H2_consumption(1); ?

clear all;
%Csur = load('Csur.csv');
H2_consumption = load('H2_consumption.csv');

Psur = load('Psur.csv');
%%%C_grid = 0.17
IniHydrogen = 9000;
H2_consumption = 0.11*H2_consumption;
H2_consumption =modifyConsumption (IniHydrogen, H2_consumption, Psur);
%H2_consumption = modifyConsumption (IniHydrogen, H2_consumption, Psur);
%H2_consumption = H2_consumption*0.7;

HydrogenProduced = calculateMinCost(H2_consumption,IniHydrogen,Psur');

%plot(x_opt);
CurrentHydrogenInTank = zeros(size(HydrogenProduced,1),1);
(((((CurrentHydrogenInTank(1) = IniHydrogen + HydrogenProduced(1) - H2_consumption(1))))); line 17 
for i = 2:size(HydrogenProduced,1)
    CurrentHydrogenInTank(i) = CurrentHydrogenInTank(i-1) +  HydrogenProduced(i) - H2_consumption(i);
end
%hour = 1:1:24;
day = 1:1:365;
plot(CurrentHydrogenInTank);
title('Amount of hydrogen in tank by day');
xlabel('Hour');
ylabel('Amount of hydrogen in tank');

[daily,totalDailyCost, averageCost, totalElectricityCost] = calculateCost(HydrogenProduced);
figure;
plot(daily);
title('Variable cost by hour')
xlabel('Hours');
ylabel('Cost');
note  line 17 between two

[Geoff Hayes]

Abdulla - the error message is telling you that HydrogenProduced is an empty matrix (the number of elements, numel, are zero). You may want to step through your code and see why calculateMinCost is returning this empty matrix.